<template>
  <div id = 'app'>
    <div class="appBox">这里是app.vue

      <router-link to="/item/1">show item</router-link>
      <div class="viewBox">
        <router-view/>
      </div>
    </div>
  </div>
</template>

<script>
export default {};
</script>

<style lang="stylus">
.appBox 
  margin 5px;
  border 1px solid blue

.viewBox 
  margin 5px
  border 1px solid red

</style>